22747505409 has 6 divisors (see below), whose sum is σ = 32857507826. Its totient is φ = 15165003600.

The previous prime is 22747505387. The next prime is 22747505437. The reversal of 22747505409 is 90450574722.

It can be written as a sum of positive squares in only one way, i.e., 15894149184 + 6853356225 = 126072^2 + 82785^2 .

It is not a de Polignac number, because 22747505409 - 2⁵ = 22747505377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22747505449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263750292 + ... + 1263750309.

Almost surely, 2^22747505409 is an apocalyptic number.

It is an amenable number.

22747505409 is a deficient number, since it is larger than the sum of its proper divisors (10110002417).

22747505409 is a wasteful number, since it uses less digits than its factorization.

22747505409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527500607 (or 2527500604 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 22747505409 in words is "twenty-two billion, seven hundred forty-seven million, five hundred five thousand, four hundred nine".